This product image provided by Roku shows the Roky 3. Roku is plugging headphones and several other new features into its latest set-top box for streaming Internet video to TVs, a move that amplifies its effort to upstage Apples better-selling player. The Roku 3 box went on sale Wednesday also includes a more powerful search engine to find movies, TV shows and music more quickly and new menu for perusing the more than 750 online services available through the device. (AP Photo/Roku)